Radiator



` `Fan. 22 1924. 1,481,312

A. J. BORGMAN r/ RADIATOR Filed Feb. 5,' 1918 1 l VIII/lll.

'Patented Jan. 22, 1924.

uNiTED stares AUGUST J. BORGMAN, OF DETROIT, MICHIGAN.

RADIATOR.

Application led February 5, 1918. Serial No. 215,484.

To 07] whom If may conce/"n:

Be it known that I, Avuus'r J. BORGMAN, a citizen of the United States of America., residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Radiators, of which the following is a specifica-- tion, reference being had therein to the accompanying drawings. l

This invent-ion relates to a radiator, and the primary object of my invention is to reshape a cylindrical tube so as to provide restricted passages through the same, the restricted passages being in the form of chambers alternately disposed at right anglesto each other, so that the walls of the chambers will serve as delectors and battles .tor air current-s passing between tubes assembled in a radiator or as a radiator unit.

A further object of my invention is to provide radiator tubes of the above character that may be assembled in groups and provided with headers adapted to fit in and communicate with a radiator body, and in consequence of this construction and arrangement, it is possible to repair or renew a radiator unit without disturbing the remainder of the radiator.

My invention particularly resides in the construction of the radiator tube, which will be hereinafter considered in detail and then claimed.

In the drawing,

Figure 1 is a front elevation of a radiator showing a unit in position;

Fig. 2 is a front elevation of a unit with the header thereof in section;

Fig. 3'is a horizontal sectional view taken on the line 3-3 ot Fig. 2; and

Fig. 4 is an elevation of a cylindrical tube showing the manner in which it may be reshaped.

Fig. 5- is a vertical transverse sectional view.

To produce radiator tubes in accordance with my invention, I take an ordinary cylindrical tube designated 1, of any durable malleable metal and Lsubject this tube to a plurality of gradual depressions 2 so as not to crack or suddenly distort or disrupt the walls of the tube, thus preventing cracking or any danger ofv openings being formed that would render the tube useless.- To depress the walls of the tube, I may use rolls or dies and after subjecting the tube to a plurality of operations, the tube is eventually reshaped to provide chambers 3. The

y chambers 3 are alternately disposed at right ally merging into walls of adjoining chambers and this is accomplished by first depressing the walls of the tube 1 in one direction` then turning the tube a quarter of a revolution and subjecting the tube to further depression, so that the walls of the alternating chambers will be formedat right angles to the walls of the other chambers. In consequence ot this tube formation there will be a direct passage 4 through each tube, but communicating therewith will be the oblong chambers 3. It is therefore evident that water or a cooling agent flowing through the tube will be retarded to a certain extent but will contact with the walls ot all of the chambers 3.

TheA tubes may be grouped so that the walls of one tube will deflect air against the walls of other tubes, and such an arranfrement has been shown in Fig. 3, where a p urality ofr tubes have been staggeredly arranged and the ends thereof connected by headers 5, said headersand the tubes thereof -constituting a radiator unit that may be mounted in a radiator body 6, so that water within the radiator body may circulate through the headers and the tubes thereof. Anysuitable fastening means may be employed for holding the headers 5 within the radiator body 6 so as to establish non-leakable connection or communication therewith. One way in which the parts may be assembled is indicated in Fig. 5, in which each header 5 carries an opening 5il adapted to afford communication bet'ween the header and a main upper header 8 and a main lower header 7, the latter headers being operatively connected to the cooling system of the" engine being served by the radiator.

With the tubes properly disposed and assembled it is obvious that currents of air passing between the tubes will cool all the walls of the chambers 3 and consequently heat may be quickly disseminated or radiated by the tubes, thus providing an etlicient radiator construction that may be used in connection with automobiles, air. planes or other crafts. l

lVhat claim is.

In radiator structures for motor vehicles, a plurality of units arranged in succession transversely of the radiator body, each unit including upper and lower headers connected by a plurality of independent tubes, each tube being formed of a succession of connected chambers of non-circular crosssection, adjacent chambers being disposed at right angles to one another, corresponding ends of the several tubes being of Similar conliguration and connected directly to the header with the points of connection arranged in resume symmetrical spacing, the assemblage of units providing a plurality of rows of tubes with each roW alined in a plane intersecting the sides of the radiator body, one rouT having its tubes laterally disposed from the tubes of the row immediately in front of it in front to rear planes of the structure.

In testimony whereof l affix my signature in the presence of two Witnesses.

AUGUST J. BORGMAN. `Witnesses KARL H. BUTLER, ANNA M. DoRR. 

